In an examination a pupil's average marks were 63 per paper. If he had obtained

Question

In an examination a pupil's average marks were 63 per paper. If he had obtained 20 more marks for his Geography paper and 2 more marks for his History paper, his average per paper would have been 65. How many papers were there in the examination?

Options:

A . 8

B . 9

C . 10

D . 11

Answer: Option D

Let the number of papers be x. Then,63x + 20 + 2 = 65x = 2x = 22= x = 11.

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